| #ifndef FIO_OS_LINUX_H |
| #define FIO_OS_LINUX_H |
| |
| #define FIO_OS os_linux |
| |
| #include <sys/ioctl.h> |
| #include <sys/uio.h> |
| #include <sys/syscall.h> |
| #include <sys/vfs.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <sched.h> |
| #include <linux/unistd.h> |
| #include <linux/raw.h> |
| #include <linux/major.h> |
| #include <endian.h> |
| |
| #include "indirect.h" |
| #include "binject.h" |
| #include "../file.h" |
| |
| #define FIO_HAVE_LIBAIO |
| #define FIO_HAVE_POSIXAIO |
| #define FIO_HAVE_FADVISE |
| #define FIO_HAVE_CPU_AFFINITY |
| #define FIO_HAVE_DISK_UTIL |
| #define FIO_HAVE_SGIO |
| #define FIO_HAVE_IOPRIO |
| #define FIO_HAVE_SPLICE |
| #define FIO_HAVE_IOSCHED_SWITCH |
| #define FIO_HAVE_ODIRECT |
| #define FIO_HAVE_HUGETLB |
| #define FIO_HAVE_RAWBIND |
| #define FIO_HAVE_BLKTRACE |
| #define FIO_HAVE_STRSEP |
| #define FIO_HAVE_FALLOCATE |
| #define FIO_HAVE_POSIXAIO_FSYNC |
| #define FIO_HAVE_PSHARED_MUTEX |
| #define FIO_HAVE_CL_SIZE |
| #define FIO_HAVE_CGROUPS |
| #define FIO_HAVE_FDATASYNC |
| #define FIO_HAVE_FS_STAT |
| #define FIO_HAVE_TRIM |
| #define FIO_HAVE_BINJECT |
| #define FIO_HAVE_CLOCK_MONOTONIC |
| #define FIO_HAVE_GETTID |
| |
| /* |
| * Can only enable this for newer glibcs, or the header and defines are |
| * missing |
| */ |
| #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 6 |
| #define FIO_HAVE_LINUX_FALLOCATE |
| #endif |
| |
| #ifdef SYNC_FILE_RANGE_WAIT_BEFORE |
| #define FIO_HAVE_SYNC_FILE_RANGE |
| #endif |
| |
| #define OS_MAP_ANON MAP_ANONYMOUS |
| |
| #ifndef CLOCK_MONOTONIC |
| #define CLOCK_MONOTONIC 1 |
| #endif |
| |
| typedef cpu_set_t os_cpu_mask_t; |
| |
| typedef struct drand48_data os_random_state_t; |
| |
| /* |
| * we want fadvise64 really, but it's so tangled... later |
| */ |
| #ifdef FIO_HAVE_FADVISE |
| #define fadvise(fd, off, len, advice) \ |
| posix_fadvise((fd), (off_t)(off), (len), (advice)) |
| #endif |
| |
| /* |
| * If you are on an ancient glibc (2.3.2), then define GLIBC_2_3_2 if you want |
| * the affinity helpers to work. |
| */ |
| #ifndef GLIBC_2_3_2 |
| #define fio_setaffinity(pid, cpumask) \ |
| sched_setaffinity((pid), sizeof(cpumask), &(cpumask)) |
| #define fio_getaffinity(pid, ptr) \ |
| sched_getaffinity((pid), sizeof(cpu_set_t), (ptr)) |
| #else |
| #define fio_setaffinity(pid, cpumask) \ |
| sched_setaffinity((pid), &(cpumask)) |
| #define fio_getaffinity(pid, ptr) \ |
| sched_getaffinity((pid), (ptr)) |
| #endif |
| |
| #define fio_cpu_clear(mask, cpu) CPU_CLR((cpu), (mask)) |
| #define fio_cpu_set(mask, cpu) CPU_SET((cpu), (mask)) |
| |
| static inline int fio_cpuset_init(os_cpu_mask_t *mask) |
| { |
| CPU_ZERO(mask); |
| return 0; |
| } |
| |
| static inline int fio_cpuset_exit(os_cpu_mask_t *mask) |
| { |
| return 0; |
| } |
| |
| #define FIO_MAX_CPUS CPU_SETSIZE |
| |
| static inline int ioprio_set(int which, int who, int ioprio) |
| { |
| return syscall(__NR_ioprio_set, which, who, ioprio); |
| } |
| |
| static inline int gettid(void) |
| { |
| return syscall(__NR_gettid); |
| } |
| |
| /* |
| * Just check for SPLICE_F_MOVE, if that isn't there, assume the others |
| * aren't either. |
| */ |
| #ifndef SPLICE_F_MOVE |
| #define SPLICE_F_MOVE (0x01) /* move pages instead of copying */ |
| #define SPLICE_F_NONBLOCK (0x02) /* don't block on the pipe splicing (but */ |
| /* we may still block on the fd we splice */ |
| /* from/to, of course */ |
| #define SPLICE_F_MORE (0x04) /* expect more data */ |
| #define SPLICE_F_GIFT (0x08) /* pages passed in are a gift */ |
| |
| static inline int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, |
| size_t len, unsigned int flags) |
| { |
| return syscall(__NR_sys_splice, fdin, off_in, fdout, off_out, len, flags); |
| } |
| |
| static inline int tee(int fdin, int fdout, size_t len, unsigned int flags) |
| { |
| return syscall(__NR_sys_tee, fdin, fdout, len, flags); |
| } |
| |
| static inline int vmsplice(int fd, const struct iovec *iov, |
| unsigned long nr_segs, unsigned int flags) |
| { |
| return syscall(__NR_sys_vmsplice, fd, iov, nr_segs, flags); |
| } |
| #endif |
| |
| #define SPLICE_DEF_SIZE (64*1024) |
| |
| #ifdef FIO_HAVE_SYSLET |
| |
| struct syslet_uatom; |
| struct async_head_user; |
| |
| /* |
| * syslet stuff |
| */ |
| static inline struct syslet_uatom * |
| async_exec(struct syslet_uatom *atom, struct async_head_user *ahu) |
| { |
| return (struct syslet_uatom *) syscall(__NR_async_exec, atom, ahu); |
| } |
| |
| static inline long |
| async_wait(unsigned long min_wait_events, unsigned long user_ring_idx, |
| struct async_head_user *ahu) |
| { |
| return syscall(__NR_async_wait, min_wait_events, |
| user_ring_idx, ahu); |
| } |
| |
| static inline long async_thread(void *event, struct async_head_user *ahu) |
| { |
| return syscall(__NR_async_thread, event, ahu); |
| } |
| |
| static inline long umem_add(unsigned long *uptr, unsigned long inc) |
| { |
| return syscall(__NR_umem_add, uptr, inc); |
| } |
| #endif /* FIO_HAVE_SYSLET */ |
| |
| enum { |
| IOPRIO_CLASS_NONE, |
| IOPRIO_CLASS_RT, |
| IOPRIO_CLASS_BE, |
| IOPRIO_CLASS_IDLE, |
| }; |
| |
| enum { |
| IOPRIO_WHO_PROCESS = 1, |
| IOPRIO_WHO_PGRP, |
| IOPRIO_WHO_USER, |
| }; |
| |
| #define IOPRIO_BITS 16 |
| #define IOPRIO_CLASS_SHIFT 13 |
| |
| #ifndef BLKGETSIZE64 |
| #define BLKGETSIZE64 _IOR(0x12,114,size_t) |
| #endif |
| |
| #ifndef BLKFLSBUF |
| #define BLKFLSBUF _IO(0x12,97) |
| #endif |
| |
| #ifndef BLKDISCARD |
| #define BLKDISCARD _IO(0x12,119) |
| #endif |
| |
| static inline int blockdev_invalidate_cache(struct fio_file *f) |
| { |
| return ioctl(f->fd, BLKFLSBUF); |
| } |
| |
| static inline int blockdev_size(struct fio_file *f, unsigned long long *bytes) |
| { |
| if (!ioctl(f->fd, BLKGETSIZE64, bytes)) |
| return 0; |
| |
| return errno; |
| } |
| |
| static inline unsigned long long os_phys_mem(void) |
| { |
| long pagesize, pages; |
| |
| pagesize = sysconf(_SC_PAGESIZE); |
| pages = sysconf(_SC_PHYS_PAGES); |
| if (pages == -1 || pagesize == -1) |
| return 0; |
| |
| return (unsigned long long) pages * (unsigned long long) pagesize; |
| } |
| |
| static inline void os_random_seed(unsigned long seed, os_random_state_t *rs) |
| { |
| srand48_r(seed, rs); |
| } |
| |
| static inline long os_random_long(os_random_state_t *rs) |
| { |
| long val; |
| |
| lrand48_r(rs, &val); |
| return val; |
| } |
| |
| static inline int fio_lookup_raw(dev_t dev, int *majdev, int *mindev) |
| { |
| struct raw_config_request rq; |
| int fd; |
| |
| if (major(dev) != RAW_MAJOR) |
| return 1; |
| |
| /* |
| * we should be able to find /dev/rawctl or /dev/raw/rawctl |
| */ |
| fd = open("/dev/rawctl", O_RDONLY); |
| if (fd < 0) { |
| fd = open("/dev/raw/rawctl", O_RDONLY); |
| if (fd < 0) |
| return 1; |
| } |
| |
| rq.raw_minor = minor(dev); |
| if (ioctl(fd, RAW_GETBIND, &rq) < 0) { |
| close(fd); |
| return 1; |
| } |
| |
| close(fd); |
| *majdev = rq.block_major; |
| *mindev = rq.block_minor; |
| return 0; |
| } |
| |
| #ifdef O_NOATIME |
| #define FIO_O_NOATIME O_NOATIME |
| #else |
| #define FIO_O_NOATIME 0 |
| #endif |
| |
| #ifdef MADV_REMOVE |
| #define FIO_MADV_FREE MADV_REMOVE |
| #endif |
| |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| #define FIO_LITTLE_ENDIAN |
| #elif __BYTE_ORDER == __BIG_ENDIAN |
| #define FIO_BIG_ENDIAN |
| #else |
| #error "Unknown endianness" |
| #endif |
| |
| #define fio_swap16(x) __bswap_16(x) |
| #define fio_swap32(x) __bswap_32(x) |
| #define fio_swap64(x) __bswap_64(x) |
| |
| #define CACHE_LINE_FILE \ |
| "/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size" |
| |
| static inline int arch_cache_line_size(void) |
| { |
| char size[32]; |
| int fd, ret; |
| |
| fd = open(CACHE_LINE_FILE, O_RDONLY); |
| if (fd < 0) |
| return -1; |
| |
| ret = read(fd, size, sizeof(size)); |
| |
| close(fd); |
| |
| if (ret <= 0) |
| return -1; |
| else |
| return atoi(size); |
| } |
| |
| static inline unsigned long long get_fs_size(const char *path) |
| { |
| unsigned long long ret; |
| struct statfs s; |
| |
| if (statfs(path, &s) < 0) |
| return -1ULL; |
| |
| ret = s.f_bsize; |
| ret *= (unsigned long long) s.f_bfree; |
| return ret; |
| } |
| |
| static inline int os_trim(int fd, unsigned long long start, |
| unsigned long long len) |
| { |
| uint64_t range[2]; |
| |
| range[0] = start; |
| range[1] = len; |
| |
| if (!ioctl(fd, BLKDISCARD, range)) |
| return 0; |
| |
| return errno; |
| } |
| |
| #endif |